(Reuters) – The Netherlands remains convinced of the need to close production at Groningen, once one of Europe’s largest gas fields, by October following earthquake risks which made it dangerous to keep operating, the Financial Times (FT) reported on Sunday citing a government official. Mining Deputy Minister Hans Vijlbrief said he would stick to the previously announced timetable and aimed to shut the earthquake-prone gas field by Oct. 1, with the option of keeping it operational one more year if there was a shortage of gas in Europe after the winter. Although the Dutch have come under pressu…